Husband says:
Back in the early days of 3E...
I had started up a campaign using The Sunless Citadel and we were all in the process of learning the new rules. I was describing how initiative works, "So, initiative is your dex modifier..."
My poor wife, pregnant and already half-asleep, started giggling hysterically. The rest of us looked at her cross-eyed until she said, "I heard your initiative is your @$$ on fire."
To this day, when one of us is having stomach problems, we say sympathetically, "Got a high initiative?"
Wife says:
As the wife in that scenario, let me say-don't let him fool you.

Yes, I said it; it's amazing what one hears at 11 pm when pregnant and trying to not fall asleep at the table.
As for one of his faux pas'...
That particular campaign was played with half dragons. I was playing an elven red half dragon. When the group was ambushed by a winter wolf (long, involved story), my character took the brunt of the breath attack. My darling, loving, fooooolllish husband ruled that my character took double damage due to her dragon type. Not only did he tell me, quite heartlessly as only a DM can, that she died instantly, he also grabbed my character sheet, crumpled it (for emphasis according to him), and tossed it unceremoniously over his shoulder. "Make a new character." Being pregnant, and again at about 11 pm or so, I start to cry. She was one of my favorite characters, and we had found a group where the concept worked really well. They continued on while I, having fallen in love with the half dragon template, looked it up in the MM. Needless to say, I took great pleasure in telling him that my character had, in fact, NOT died, she had just taken a large hit. After he looked over the template in the MM, he sheepishly handed my character sheet back to me, and we rewound the game to the point where my character did NOT die. The other ladies at the table razzed him about it, too, and the husbands all looked at him in sympathy and "dude, that was stupid" written all over their faces.
Husband says:
I had a high initiative after that one.
Quentin and Marie